ha_innodb.cc:

  Remove accidenatlly committed debug printfs when query cache is used
sql_update.cc, sql_load.cc, sql_insert.cc, sql_delete.cc:
  For the transactional query cache algorithm to work we must invalidate the query cache in INSERT/DELETE/UPDATE before writing to the binlog or calling ha_autocommit_... Note that binlog writing may also call commit. The crucial thing is that the transaction which modified data must not be committed BEFORE the query cache is invalidated.

sql/ha_innodb.cc

@@ -560,12 +560,12 @@ innobase_query_caching_of_table_permitted(
 #endif
 	if (row_search_check_if_query_cache_permitted(trx, norm_name)) {
 
-		printf("Query cache for %s permitted\n", norm_name);
+		/* printf("Query cache for %s permitted\n", norm_name); */
 
 		return((my_bool)TRUE);
 	}
 
-	printf("Query cache for %s NOT permitted\n", norm_name);
+	/* printf("Query cache for %s NOT permitted\n", norm_name); */
 
 	return((my_bool)FALSE);
 }

sql/sql_delete.cc

@@ -178,6 +178,15 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, ORDER *order,
     (void) table->file->extra(HA_EXTRA_NORMAL);
 
 cleanup:
+  /*
+    Invalidate the table in the query cache if something changed. This must
+    be before binlog writing and ha_autocommit_...
+  */
+  if (deleted)
+  {
+    query_cache_invalidate3(thd, table_list, 1);
+  }
+
   transactional_table= table->file->has_transactions();
   log_delayed= (transactional_table || table->tmp_table);
   if (deleted && (error <= 0 || !transactional_table))
@@ -199,14 +208,6 @@ cleanup:
       error=1;
   }
 
-  /*
-    Store table for future invalidation  or invalidate it in
-    the query cache if something changed
-  */
-  if (deleted)
-  {
-    query_cache_invalidate3(thd, table_list, 1);
-  }
   if (thd->lock)
   {
     mysql_unlock_tables(thd, thd->lock);
@@ -480,6 +481,10 @@ bool multi_delete::send_eof()
   /* reset used flags */
   thd->proc_info="end";
 
+  /* We must invalidate the query cache before binlog writing and
+  ha_autocommit_... */
+  if (deleted)
+    query_cache_invalidate3(thd, delete_tables, 1);
 
   /*
     Write the SQL statement to the binlog if we deleted
@@ -505,9 +510,6 @@ bool multi_delete::send_eof()
     if (ha_autocommit_or_rollback(thd,local_error > 0))
       local_error=1;
 
-  if (deleted)
-    query_cache_invalidate3(thd, delete_tables, 1);
-
   if (local_error)
     ::send_error(thd);
   else

sql/sql_insert.cc

@@ -344,7 +344,18 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list,
     else if (table->next_number_field)
       id=table->next_number_field->val_int();	// Return auto_increment value
 
+    /*
+      Invalidate the table in the query cache if something changed.
+      For the transactional algorithm to work the invalidation must be
+      before binlog writing and ha_autocommit_...
+    */
+    if (info.copied || info.deleted)
+    {
+      query_cache_invalidate3(thd, table_list, 1);
+    }
+
     transactional_table= table->file->has_transactions();
+
     log_delayed= (transactional_table || table->tmp_table);
     if ((info.copied || info.deleted) && (error <= 0 || !transactional_table))
     {
@@ -362,14 +373,6 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list,
     if (transactional_table)
       error=ha_autocommit_or_rollback(thd,error);
 
-    /*
-      Store table for future invalidation  or invalidate it in
-      the query cache if something changed
-    */
-    if (info.copied || info.deleted)
-    {
-      query_cache_invalidate3(thd, table_list, 1);
-    }
     if (thd->lock)
     {
       mysql_unlock_tables(thd, thd->lock);
@@ -1420,11 +1423,11 @@ void select_insert::send_error(uint errcode,const char *err)
   ::send_error(thd,errcode,err);
   table->file->extra(HA_EXTRA_NO_CACHE);
   table->file->activate_all_index(thd);
-  ha_rollback_stmt(thd);
   if (info.copied || info.deleted)
   {
     query_cache_invalidate3(thd, table, 1);
   }
+  ha_rollback_stmt(thd);
 }
 
 
@@ -1435,6 +1438,14 @@ bool select_insert::send_eof()
     error=table->file->activate_all_index(thd);
   table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
 
+  /* We must invalidate the table in the query cache before binlog writing
+  and ha_autocommit_... */
+
+  if (info.copied || info.deleted)
+  {
+    query_cache_invalidate3(thd, table, 1);
+  }
+
   /* Write to binlog before commiting transaction */
   if (mysql_bin_log.is_open())
   {
@@ -1444,10 +1455,6 @@ bool select_insert::send_eof()
   }
   if ((error2=ha_autocommit_or_rollback(thd,error)) && ! error)
     error=error2;
-  if (info.copied || info.deleted)
-  {
-    query_cache_invalidate3(thd, table, 1);
-  }
   if (error)
   {
     table->file->print_error(error,MYF(0));

sql/sql_load.cc

@@ -283,6 +283,10 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
   table->copy_blobs=0;
   thd->count_cuted_fields=0;			/* Don`t calc cuted fields */
 
+  /* We must invalidate the table in query cache before binlog writing and
+  ha_autocommit_... */
+  query_cache_invalidate3(thd, table_list, 0);
+
   if (error)
   {
     if (transactional_table)
@@ -344,8 +348,6 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
   }
   if (transactional_table)
     error=ha_autocommit_or_rollback(thd,error); 
-  query_cache_invalidate3(thd, table_list, 0);
-
 err:
   if (thd->lock)
   {

sql/sql_update.cc

@@ -332,6 +332,21 @@ int mysql_update(THD *thd,
   free_io_cache(table);				// If ORDER BY
   thd->proc_info="end";
   VOID(table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY));
+
+  /*
+    Invalidate the table in the query cache if something changed.
+    This must be before binlog writing and ha_autocommit_...
+  */
+  if (updated)
+  {
+    query_cache_invalidate3(thd, table_list, 1);
+  }
+  if (thd->lock)
+  {
+    mysql_unlock_tables(thd, thd->lock);
+    thd->lock=0;
+  }
+
   transactional_table= table->file->has_transactions();
   log_delayed= (transactional_table || table->tmp_table);
   if (updated && (error <= 0 || !transactional_table))
@@ -353,20 +368,6 @@ int mysql_update(THD *thd,
       error=1;
   }
 
-  /*
-    Store table for future invalidation  or invalidate it in
-    the query cache if something changed
-  */
-  if (updated)
-  {
-    query_cache_invalidate3(thd, table_list, 1);
-  }
-  if (thd->lock)
-  {
-    mysql_unlock_tables(thd, thd->lock);
-    thd->lock=0;
-  }
-
   delete select;
   free_underlaid_joins(thd, &thd->lex.select_lex);
   if (error >= 0)
@@ -950,6 +951,14 @@ bool multi_update::send_eof()
   int local_error = (table_count) ? do_updates(0) : 0;
   thd->proc_info= "end";
 
+  /* We must invalidate the query cache before binlog writing and
+  ha_autocommit_... */
+
+  if (updated)
+  {
+    query_cache_invalidate3(thd, update_tables, 1);
+  }
+
   /*
     Write the SQL statement to the binlog if we updated
     rows and we succeeded or if we updated some non
@@ -988,10 +997,6 @@ bool multi_update::send_eof()
 
   sprintf(buff,ER(ER_UPDATE_INFO), (long) found, (long) updated,
 	  (long) thd->cuted_fields);
-  if (updated)
-  {
-    query_cache_invalidate3(thd, update_tables, 1);
-  }
   ::send_ok(thd,
 	    (thd->client_capabilities & CLIENT_FOUND_ROWS) ? found : updated,
 	    thd->insert_id_used ? thd->insert_id() : 0L,buff);